Carex petricosa Dewey var. petricosa
rock-dwelling sedge
Cyperaceae (Sedge family)
Introduction to Vascular Plants
rock-dwelling sedge
Cyperaceae (Sedge family)
Introduction to Vascular Plants
Photograph
Map
Distribution of Carex petricosa var. petricosa
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Species Information
General:
Perennial, densely tufted herb from short rhizomes; stems 10-60 cm tall, longer than the leaves.
Leaves:
Sheaths tight; blades flat or channeled, 0.5-3 mm wide, the lower ones reduced.
Flowers:
Spikes 4 to 7, the upper 1 to 3 with male flowers, sometimes with a few female flowers below, stalked, cylindrical, 2-4 cm long, the lower spikes 1 to 4, separate, erect to ascending or spreading, 2-4 cm long, with female flowers, or sometimes with male flowers towards the tips, the upper short-stalked, the lower long-stalked; bracts subtending the lowest spike long-sheathed, leaflike, 1.5-10 cm long, the blades much shorter than the inflorescence.
Fruits:
Perigynia lanceolate to egg-shaped, 4-5 mm long, 1-2 mm wide, sparsely to moderately short-hairy or merely fringed marginally, obscurely nerved, the beaks short, rough; female scales egg-shaped, slightly shorter than the perigynia, rounded to pointed, dark brown, the centres paler, the margins translucent; stigmas 3; achenes 3-angled, 0.8-1.2 mm long.
Ecology
Ecological Framework for Carex petricosa var. petricosa
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
| Site Information |
Value / Class |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
2095 | 2095 | 2095 |
| Slope
Gradient (%) |
15 | 15 | 15 |
|
Aspect (degrees) |
243 | 244 | 244 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 3 | 3 |
| Modal
Nutrient Regime
Class |
B | ||
| #
of field plots species was recorded in: |
1 | ||
| Modal
BEC Zone Class |
IMA | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
IMA(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Dry gravelly, often calcareous slopes and rock outcrops in the alpine zone; rare in NE and SE BC; N to AK, YT and NT, E to SW AB and S to MT.Status Information
Synonyms
Synonyms and Alternate Names:
Carex franklinii Boott
Carex macrogyna Turcz. ex Steud.
Carex petricosa var. distichiflora (B. Boivin) B. Boivin
Carex petricosa var. franklinii (Boott) B. Boivin